Donate
‹ Back
Domain Name System Security Extensions (DNSSEC) 3 April 2017

Introduction to PKIs & CAs

In order to be trusted, the Internet must provide channels for secure and private communication between entities, which can be clearly authenticated in a mutually understood manner.

There are several commonly used mechanisms for supporting secure and private communication, transaction protection and identity assertion and management. These include the so-called Internet PKI commonly used for secure web browsing but which can be used for other applications, PKI for e-mail, RPKI used by Regional Internet Registries to assert the holders of IP resources, and DNSSEC that can be used to validate DNS queries. DANE is a new protocol that uses DNSSEC to allow owners to assert their own digital certificates, and therefore potentially incorporate the functionality of the Internet PKI into the global DNS.

This Introduction to PKIs & CAs provides an overview of how these mechanisms work and how they are deployed.

The topics include:

  • What is a Public Key Infrastructure?
  • How does Public Key cryptography work?
  • Why should I care about PKIs?
  • What is a CA?
  • How do I establish a publicly trusted CA?
  • What do I need to worry about?
  • What is RPKI?
  • What is DNSSEC?
‹ Back

Related articles

State of DNSSEC Deployment 2016
State of DNSSEC Deployment 2016
Domain Name System (DNS)31 December 2016

State of DNSSEC Deployment 2016

This report provides a snapshot of the state of deployment of DNSSEC as of the end of 2016. Please download the...

Deployment Guide: DNSSEC for Internet Service Providers (ISPs)
Deploy36011 November 2013

Deployment Guide: DNSSEC for Internet Service Providers (ISPs)

An Internet Service Provider needs to offer high value while containing costs. One way to increase your services' value is...

The Two Sides of DNSSEC – Signing and Validation
Domain Name System Security Extensions (DNSSEC)5 August 2014

The Two Sides of DNSSEC – Signing and Validation

There are two sides of DNSSEC, Signing and Validation, that together provide the increased level of security offered by DNSSEC...

Join the conversation with Internet Society members around the world